Deciding to choose Option 1(D) or Option 2(B)

James Keohane

Sustainability and Commissioning Consultant

Sustainable Engineering Concepts, LLC

LEEDuser Basic Member

86 thumbs up

November 13, 2013

I am trying to think thru and identify the first cost difference of Option1(IPMVP Option D) or Option 2 ( IPMVP Option B). For a new office building, 100,000s.f. with a likely 100% tenant identified using a triple net lease and with all electric energy source.........it seems as if our team could choose either option. The identified tenant will be required to earn LEED CI. True? Not? See any roadblocks to earning LEED for CI EAcr3? My thinking: The credit language does not prohibit new construction from using Option 2(IPMVP Option B). Implementation of Option 2(IPMVP Option B) would seem less expensive(my gut reaction with no real world pricing) path than Option 1. Your comments, thoughts and wisdom would be most welcomed.

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Wed, 11/13/2013 - 14:31

Option B rarely applies to new construction projects in my experience. Your project would have to have almost no energy efficiency strategies that result in interactive effects (i.e. lighting affects heating and cooling) or develop a method for accounting for the interactive effects. So if your project has very limited energy saving measures that can be easily isolated from one another then Option B is possible.

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